srb7 srb7
  • 09-10-2017
  • Mathematics
contestada

Work out the value of 3x + 2y when x=4 and y=-5

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musiclover10045
musiclover10045 musiclover10045
  • 09-10-2017

3x + 2y =

3*4 + 2*-5=

12 + -10 = 2


Answer Link
penfila11Pen
penfila11Pen penfila11Pen
  • 09-10-2017
Just substitute the equation with the given

The given are 
x = 4 and y = -5
the equation is
3x + 2y
3 (4) + 2 (-5) = 12 - 10 = 2
Answer Link

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